I defend a deontological social contract justification of punishment for free will deniers. Even if nobody has free will, a criminal justice system is fair to the people it targets if we would consent to it in a version of original position deliberation (OPD) where we assumed that we would be targeted by the justice system when the veil is raised. Even if we assumed we would be convicted of a crime, we would consent to the imprisonment of violent criminals (...) if prison conditions were better than the state of nature but deterring enough to prevent the state of nature. And even if we assumed we would be accused of a crime, we would consent to an evidentiary standard low enough to allow a conviction rate sufficient to prevent the state of nature. After explaining this justification, I contrast it with the public health quarantine justification defended by Derk Pereboom and Gregg Caruso, and argue that it provides a stronger response to the using criminals as mere means objection. (shrink)